Sling Psychrometers are an Easy, Accurate Way to Determine Atmospheric Humidity
Sling Psychrometers are economical, high-quality instruments. 9–1⁄2"L wet and dry bulb thermometers are mercury-filled, lab quality with Fahrenheit or Celsius scales. Thermometers are mounted on a lightweight stainless steel back with a wooden sling handle grip. Handle and mount are connected by swivel hooks. Each Sling Psychrometer comes with one wick and a chart for determining relative humidity.